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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd,Tracy, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (pg1L) (pglL) (pglL) (pg/L) (pg1L) (pg/L) (mg1L) Comments <br /> MW-5 3/23/1988 -- 2545 479 2066 6,200 - 420 5 — 600 — — <br /> 6f7/1988 -- 2545 4 85 2060 — — — — — — — — <br /> 10/18/1988 -- 2545 545 2000 1,300 — 34 09 1 170 -- — <br /> 2/15/1990 -- 2545 445 2100 1,900 — 220 21 330 250 -- -- <br /> 4/26/1990 - 2545 465 2080 -- - — — — — — — <br /> 7/12/1990 - 2545 472 2073 4,400 — 140 94 130 300 -- -- <br /> 8/27/1990 2545 515 2030 <br /> 11/2/1990 — 2545 520 2025 <br /> 11/5/1990 2545 521 2024 7 500 — 430 55 760 1 600 — - <br /> 2/25/1991 - 2545 429 2116 2,400 - 160 59 120 96 -- - <br /> 6/27/1991 -- 2545 534 2011 ND<50 67 ND<0 5 ND<0 5 NO<0 5 -- -- <br /> 9/25/1991 2545 574 1971 1,800 — 120 39 79 94 — — <br /> 12/10/1991 -- 2545 510 2035 720 -- 46 34 38 58 — — <br /> 3/25/1992 -- 2545 432 2113 550 — 75 033 4 32 — -- <br /> 6/25/1992 -- 2545 -- — <br /> 12/8/1992 -- 2545 11 62 1383 — -- - — — — — <br /> 3/10/1993 — 2545 1211 1334 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 — -- <br /> 6/16/1993 -- 2545 1013 1532 73 -- 22 21 39 57 — — <br /> 10/22/1993 — 2545 499 2046 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 1/24/1994 - 2545 891 1654 120 11 06 26 2 6 ND<5 0 -- <br /> 6/7/1994 -- 2545 638 1907 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 9/13/1994 -- 2545 599 1946 N0<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 N0<5 0 — <br /> 1/10/1995 2545 4 35 2110 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 -- -- <br /> 3/23/1995 — — — — 620 — 20 25 55 53 -- -- QC-1 <br /> 3/23/1995 -- 2545 419 2126 9i0 -- 23 3 68 65 — 79 <br /> 10/4/1995 — 2545 541 2004 ND<50 — 22 ND<0 50 069 ND<1 0 78 69 <br /> 1/4/1996 — 2545 462 2083 130 — 46 11 45 37 87 26 <br /> 3/2911996 -- 2545 445 2100 490 -- 27 N0<1 20 12 13 27 <br /> 7/1/1996 — 2545 501 2044 580 - 35 5 30 13 11 37 <br /> 10/15/1996 -- 2545 523 2022 380 — 39 12 86 124 34 55 <br /> 4/16/1997 -- 25 45 390 21 55 -- — -- — -- _ — _ <br /> 10/15/1997 -- 2545 508 2037 <br /> 3/17/1998 — 2545 4 70 2075 — — — — — -- - — <br /> Report Date ApM 8,2005 Page 19 of 27 <br />